Heats and cools through existing ducts; the most common upgrade.
$12,000 – $18,000
Ductless mini-split
Great for homes without ducts, or additions and ADUs.
$5,000 – $18,000
Gas furnace
Replacing a furnace like-for-like.
$6,000 – $12,000
Central air conditioning
Adding AC to an existing furnace and ducts.
$7,000 – $13,000
By project size
What a whole project costs
Project
Typical total
Single-zone ductless
$5,000 – $9,000
Whole-home ducted heat pump
$12,000 – $18,000
Multi-zone ductless or cold-climate system
$14,000 – $24,000
Cost factors
What drives the price
System type and size
Tonnage and zones are sized to your home’s heat loss.
Ductwork
Leaky or undersized ducts may need sealing or replacement.
Electrical
Some homes need a panel or circuit upgrade for a heat pump.
Rebates
Utility and city programs can take thousands off.
Ways to save
How to keep the price down
Check Seattle City Light, PSE and Snohomish PUD for current heat pump rebates before you sign.
Federal tax credits for heat pumps ended after 2025 – ask installers about local programs instead.
Ask for a room-by-room load calculation, not a rule-of-thumb size.
How we price
Ranges are typical installed prices for the Seattle–Tacoma–Everett area, checked against published local pricing (sources below). They’re for planning. Your written quote is the real number.
Equipment brand and efficiency, sizing, ductwork and electrical work.
Sources
Where these prices come from
Our typical range, $12,000–$18,000 for a ducted heat pump, installed, sits inside what local contractors and cost publishers report. Their numbers differ because each prices a different scope, finish level or home size.
What the range includes
A ducted heat pump with outdoor unit, air handler, line set, controls and startup.
Not included
New ductwork, electrical panel upgrades, permit fees. Rebates come off afterwards.
Prices checked September 30, 2026 by Clearview Home Guide.